Sylvania



2 slcleets-sl'leet 1. T. GORDON in W. R. SWIFT.

Patented Mam. 4, 1890.

.Vinvin/434141155 (No Model.)

REGBNBRATIVE GAS BURNER. No. 422,587.

r11n/enteras am .im www Jug/ witnesses (No Model.) 2 Sheets-Sheet 2. T. GORDON 8v W. R. SWIFT.

REGENERATIVB GAS BURNER.

No. 422,587. Patented Mar. 4, 1890.

v INVENTOR av m wlTNgzssEs.

UNITED STATES PATENT OFFICE.

THOMAS lGORDON AND VILYILIAM RFSWIFT, OF PHILADELPHIA, PENN- SYLVANIA.

REGENERATIvi-z GAS-BURNER.

SPECIFICATION forming part of Letters Patent No. 422,587, dated March 4, 1890. Application led July 16,1889. Serial No. 317,659. (No model.)

To all whmwit may concern.-

.Be it known that we, THOMAS GORDON and WILLTAM R. SWIFT, citizens of the, United States, residing in the city of Philadelphia, in the Statev of Pennsylvania, have jointlyinvented certain new and useful Improvements in Regenerative Gas-Lamps, of which the following is a full, clear, and exact description, reference being had vto the accompanying drawings, forming a part of this specification.

Qur invention relates to regenerative gaslainps of the inverted class; and it consists, primarily, of a novel combination of a gassupply chamber and its inverted gas-burning tubes or orifices with and between two connected air-chambers, this form of gas-lam p being constructed on the principle of dividing the airchamber into two compartments, the central one communicating with the open air to supply a current to the inner walls of the gas-chamber and its-tubes and orilicewalls, a portion ot said air being deflected and fed to the under surface of the flame', the remainder of the volume passing upward into the outer compartment of the air-chamber, heated and expanded therein, and .from thence discharged into the body of the flame on the upper surface thereof at or about the point of ignition. For the general form of a lamp of that character, constructed on the principle of dividing` the air-chamber Ainto two compartments, a full description will be found in our pending application for Letters Patent therefor, Serial No. 294,349, filed December 2l, 1888, our present improvement being for a novel arrangement of the parts and in several details of construction, as above mentioned and shown in the drawings hereinafter referred to, and has for its object to supply an economically-constructed regenerative gas-lamp of the inverted pattern, in which the common defect in presentlamps of that character 'of 'overheating of the parts and consequent clogging of the gas-pipes is largely obviated; also, to divide the air-current so that it shall be ejected in as nearly equal quantities as may be and in a heated and eX- panded condition to the inner and to the under surfaces, respectively, of the flame; and to that end our invention is constructed on the principle described of dividing the air-chamber into two parts or compartments, the inner one being extended downward to the base of the lamp and communicating` at that point with the open air, inclosing the top of the latter within the other and connecting the same with eachother at the top,the space between the inner and outer walls of the two chambers or compartments, respectively, being closed at both top and bottom and forming a gas-magazine, from which project downward an annular or other series of gas-burner tubes, or the base of which is made thick and is pierced vertically, or nearly so, to form a series of oriiices terminating in gas-jets; and our present invention has for its further object a peculiar construction and relative arrangement of the several parts, in order that a divided quantity of the incoming volume of fresh air will be deflected in its vertical passage and led off through orifices or through an annular opening at a point above the burneretips, and be discharged thence down- V wardv to the under surface of the flame at or about the point of ignition.

In the accompanying drawings, representing our invention, Figure l is a vertical section of an inverted regenerative gas-lamp constructed according to our present improvement. Fig. 2 is a modification of the base of a lamp intended to show how thegas I maybe introduced from the bottom of the lamp instead of the top. Fig. 3 vis a modiication of the device shown in Fig. l, in which the inner compartment of the air-chamber is divided into two unconnected parts, so as to form a deflector for a part of the incoming air and a passage for one divisionV of the volume of the same downward to the under sur- L'face ofthe llame, and the gas-chamber is 'ing an extended lower end passing through the base of the lamp and terminating in a cap provided with perforations b', which permit the entrance of fresh air into the main body of the chamber. The latter is surrounded by an annular or other form of casing, forming the outer air-chamber C, extending downward to a point slightly above the ends of the burner-tips or gas-orifices and having a closed base, which is provided with a series of perforations C, through which the current of air is ejected, and passes thence into the body of the llame on the upper surface thereof at or about the point of ignition.

Between the two air-compartments A and C, which open into each other at the top, is formed a gas-chamber B, which is closed both at its top and bottom, and has burner-tubes d, which may project for some distance within the gas-chamber, but always project below the base of the gas-magazine B, and also slightly below the base of the outer air-chamber C, or gas-jet orificesl may be formed by verticalperforations through the thickened base of the gas-chamber.

Gas is supplied to the gas-magazine B through La conduit l), either from the top of the lamp, as shown in Figs. l and 3, or from the bottom of the lamp by means of a modificationr shown in 2, and in Fig. l the conduit is shown extended for along distance downv almost to theV base of' the fresh-air chamber, and is connected about midway withthe gas-1nagazine l5 by means of `hollow arms f, the air passing freely between the said hollow arms from the rst air-chamber to the second.

Aninclosing-globe E, forming a combustion-chamber of any well-known form, maybe employed, Fig. l showing aV form in which the upper'portion is of itself a conduit carrying away the waste products of combustion, while in Fig. 3 a special conduit for that purpose is supplied.

InFigs. l and v3 are shown three different modes of construction and arrangementof the gas-jets. the gas-tubes l are shown constructed integral with the gas-magazine B and extend for some distance downward from the base ofthe magazine; or instead of tubes the base of the magazine may be thickened, as shown in Fig. 3, and vertical or nearly vertical perforations therein, forming gas-orifices, take the place of the gast-ribes of Fig. l; and agaimsuch tubes,

when tubes proper are used, may extendfory somev distance up into the body of the gasmagazine for the purpose hereinafter men tioned. On the right-hand side of said Fig. 1 the gas-tubes d are shown arranged `in the same manner as on the left-hand side of said` figure; but are made separate or screwed into or otherwise affixed to the base of said magazine, and `in this case we make them of steatite, soapstone, or other non-inflammable material,` but of low heat-conductive power, the objectin both cases being to prevent as far 0n the left-hand side ofFig. ly

as possible a transmission of primary heat at the burner-tips into the inlet ends of the gas tubes or orifices in the gas-magazine.

In Fig. 3 the gas-conduit l) is shown insulated from the combustion-chamber and its ,Ilue by means of a surrounding cylinder of gsome non-heat-eonductive material, (marked F on the drawings,) whereby an annular space T is formed between the conduit l) and the insulating-tube F, in order that moving' air in said space will tend to keep the gas-conduit b in a comparatively cool condition. In said iFig. 3 is shown an escape-fine K in addition .to the combustion-globe E, said iue resting :upon the body of the lamp passing through `the top of the globe and being provided with perforations k for the draft; In said Fig. 3 is also shown a peculiar construction of thein ner compartmentA of the air-chamber; Insteadof the lower extension A of saidehal'nber A beingofthe same diameter as the main body thereof, Vit is made smaller in diameter and extending up into the body ofith'e chamber A, so as to form an annular passage for a divided current of air to flow downward to the under surface of the flame, the said Smaller cylinder A of the inner air-compartment being supported within the largerlone A by means of air arm ll, extending dowm ward from the top of the inner wallof-the gas-magazine or from Tits connecting-tubes j', ithe objectofthis afrrangement'bcing to suplply directly from the incoming volume of freshl `airla divided volume thereof in a heated icondition throughthe annular opening g to ithe under surface ofy the flame at: or'about the point of ignition. By this construction,

`due regard "being had to the aggregate area {of the perforations c of the outerair-chamber lrelatively to the arca of the annularopenmg lg of thejinner air-chamber, we are enabled ito ldivide the currentof-.fresh-air and deliverit simultaneously in equal volumes to the inner fand under surfaces, respectively, of the llame. lOther inlet air-perforations mare provided iin the air-supply tube A of the chamber A' to maintain an equilibrium within the incloS-,

ling globe and prevent a vacuum at the base lthereof, as all the air required to feed the flame is in this construction suppliedfroni the base of the lamp solely through the een` .tral ai rsupply conduit. re also showin Fig. what may be desirable inlarge lamps to prevent the burning away of the material of ath'e outerv aircl1amber-viz., an insulating- ,cover (markediG) of non-heatconducting material surrounding the lower` portion of the Aouter wall of the said chamber.

rlhe operation of the device is as follows: Gas enters the magazine Band issuesfrom th'e tips ofthe gas-burnertubes d, thus forming a flame which,aided by thedellecting plate n or by the bulging sides of the lower part of the chamber A, becomes spheriealfin "its tendency to curve around the sides ofithe IOO IIO

IZO

outer chamber C, the waste products of' com.-A

bustion passing upward over and around the outer walls of said chamber C, heating the same on its passage to the escape-flue. The heat from the ignition of the gas draws in a constant supply of fresh and comparatively cool air through theperforations of Fig. l, or through the entirely open base, as shown in Fig. 3, the latter being so provided in some casesto enable a torch to be more easily inserted to light the lamp and without opening the globe, which is an important feature in a suspended lamp. -Said air will pass up-v eduction-openings c directly within the body of theignited flame. The course of the travel of the air and gas, as above described, is shown also by arrows in the drawings. In oi'der to divide the incoming current of air to supply the flame on the under side thereof, openings or outlets g are provided in the chamber A at suoli points therein opposite the extended arms of the gas-burner tubes, as in Fig. l, or as in Fig. 8 said openings are supplied by an annular opening (marked g) formed by the walls of different diameters of the two parts of the air-chamber, as hereinabove described, so that the deflected current of entering air will pass against the inner sides of the tubes in this-construction precisely as against the vertically-orificed wall in the other, and be ejected in both cases downward in a heated and expanded condition to the under side of the lameof ignited gas, as shown in the drawings. The volumes of air thus fed to the upper and lower surfaces of the iiame bei-ng thus of high temperature and expansion are regulated by the relative areas of the discharge-openings, so as to be of equal volume or pressure.

Having thus described our invention, what we claim as new, and desire to secure by Letters Patent, is

LA regenerative gaselamp comprising a conibuStien-chamber, a gas-chamber having tubes or orifices delivering gas downward to the Haine, a gas-conduit conveying *the gas to said gas chamber, an air heating chamber surrounding the gas chamber to a point sli glitly above the gas-j et orifices, and having discharge-outlets at its lower end, an inner air-chamber passing through the gas-chamber and communicating at its top with said outer air-chamber and at its base with the open air, and provided with discharge-outlets for air at, points therein opposite the gas-tubes, and with other discharge-outlets for air near its base and within the combustion-chamber7 substantially as described.

2. A regenerative gas-lainp comprising a combustion-chamber, a gaschamber having a thicken ed base pierced with vertical orifices and forming an inverted burner, a gas-conduit conveying gas to said gas-chamber, an airheating chamber surrounding the gas-chaniber to a point slightly above thegas-jet orifices, and having discharge-outlets for air at its lower end, an inner air-chamber composed of'two sections of unequal diameter partly within each other, the larger one being Wholly within the gas-chamber vand communicating at its top with said outer air-chainwithin the larger and communicating at its base with the open air, substantially as described.

3. In a regenerative gaslamp, the combination, with a combustioii-chamber, of an inverted burner delivering gas downwardV to the flame, an air-heating chamber surrounding the burner and provided with discharge- `outlets for delivering heated air upon the upper surface of the flame, Ian inner air 'chamber located wholly-within the burner,

ber, and the smaller one supported partly i and an airsupply tube communicating,with

the atmosphere at its lower end and extending upward to a point within the inner airchaniber above the level of the burnertips, said air-supplytube being of smaller IOO diameter than the said inner air-chamber,

whereby an annular passage is provided for the downward discharge of a deflected volv unie of heated and expanded air to the under IIO chamber to a point above the burner-tips and supported therein by means of the arm ll,

substantially as described.

5. The combination, in a regenerative gaslamp, of an outer casing forming the walls of an airehaniber'C, a gas-magazine B with vertical orices d, a gas-conduit l), hollow arms f, leading therefrom to the gas-magazine,

an outer conduit supported upon theapex of the air-chamber C and forming an air-passage surrounding that part of the gas-conduit b which is located above the combustion-chain ber and within the escape-flue of the lamp,

an inclosing globe yor combustionehamber,

m1 escape-Hue, and un inner ar-ehmnber In testimony whereof we have hereunto passing through the gaschamber, commuafxed our signatures thls 29th day of J une, xo uieatiug at its top with Suid out-er air-ehmu A. D. 1889.

ber C, extending downward through the THOMAS GORDON. 5 combustion-ehmnber and Communicating at VILLIAM R. SWIFT.

its buse with the open zur, said partis being \Vitfnesses:

constructed, combined, and arranged sub- 12 CHAS. A. CARSON,

smntiully as set forth. L. P. SIMPSON. 

